Combustion system



L. L. SCOTT; COMBUSTION SYSTEM. APPLICATION FILED MAR. 6. 1918.

1 352 22 Patentedfiept. 7,19%,

FIG-a,

O 44 nunul 43 5 N 2 U K D I E WITNESSES. [NI/EH70? ice a line (a maxi ML.

LEW 1% 11. SCOTT, 01*" ST. LOUIS, IvIIiSSOURI, .ASSIGNOR T0 STANDARDENGINEERING GUM FAX-TY, G1? ST. LOUIS, MISSOURI, A CORPCIRATIUFAT.

concussion" SYSTEM.

Application filed March 6, 1918. Eerie},

Mv invention relates to the burning of heavy oils which are pmctieellynonvolatile at normal temperature, and concerns it combustion systemwhereby heavy oils are ignited at normal temperature by an electricspark. p D

My invention can he used in connection with any hes/t absorbing mediumsuch, for

example, as :1 steam generator used in steam automobiles.

Heavy liquid liyi'lrocerhon. such as ker0- senc, can he completelyburned without preheating, at normal temperature by finely dividing theliquid fuel and mixing it with i the proper amount of air to supportcombusamount of heat and that Wili burn heavy lay d ion fuel and ignite.zime by an elec- We speck ."ithont any preheating To this cnh I employe. piuii'elity of liquid fuel etoinizeis which produce finely dividedmixtures of hydrocui'bon fuel and'aii', and the mixture "from at leastone oi'rlsziid atomizei's being ignited by means of an electric spark;and to the mi es "from these atoniizers l. furnish additional air so asto get complete combustion. I also pzovide means for bringing ell ofmixtures into operation in substantial unison.

Another object of ti e invention is to automatically control, theoperation of the sys em by changes in s, heat absorbing: me dium, suchas {L steam generator.

In the accompanying drawings: Figure l is a. diagrammatic View of mySpecification of Letters liatent.

Patented slept. 3Q a $20,856.

combustion system as applied to a steam generator;

Figiiil is on end View of the fuel. etoinizers.

and el ctric driven blower used in connection with my combustion system;and

Fig.3 illustrates a form of fuel sterilizing nozzle that may be used inconnection with my combustion system.

Referring to the drawings, the numeral 1' indicates the coils of :isteam generator of the SQIHliiklSll type, 2 the Water inlet to the coilsand 3 the steam outlet pipe. lnclosing the coils is heat insuletincasing 4 which has a combustion chamber 5 formed in its lower portion.-Tl1e numeral 3 indicates an air compressor, which is provided with theusual check valves 7. This air compresses may be driven in any suitablemanner, as by a. steam engine or an electric motor, neither of which isshown. The numeral 8 indicates an ftl! tank for storing air at highpressure from the six.- compre'ssor t3 and is provided with a, smellhand-operated air pump 9. leading from the Eli-ill tank 8 is a. deliverypipe 11 which is provided with a, reducing valve ill), the purpose ofwhich is toreduce the air pressure tioni the tank 8 to the delivery pipeand keep the air pressure in seidv pipe constant.

The numerei indicates a kerosene fuel tank. ilonnected to the pipe 11 isan air pipe 13 which coinniuiiucetes with the fuel tank sit the toptheicof and is provided with u valve 14;. The numeral 15 indicatesuiieis" pipe which is also connected to the delivei'y pipe 11 and leadsto the fill nozzles '16, ii and 18, Fig. 2. The pipe 15 is prm i'idedwith a valve lii-ivliicli is adapted to he (jp'nfid by the solenoid 2t,the action of which will he described lziteix Leading from the bottom ofthe "fuel tank 12 is a pipeizi which ing from the float v. ilve'22 is afuel pipe 23 which is connected to the fuel nozzles 24, 25 and .26, Fig.2. Air from the nozzles l6, l7 and 18 utomizes fuel from. the nozzles24, 25 i 56, isspoetii'ely, g iid said atomized connected to a floatx-alve 22. Leadmixtures, which are rich in hydrocarbon are directedtowai'd the combustion chamber h the mixture nozziesfl? 28 and 29 renozzles. in the drawing it isshown e5 operatin with the nozzle 28 only.Electric bustion chamber through a pipe or duct 36' which. pipe inclosesin common the mixture nozzles 27, 28 and 29, to complete combustion ofthe mixtures from said mixture nozzles and project the flame ontothecoils 1. The numeral 37 indicates a manually operated switchconnecting the negative side of the battery 31 to the-solenoid throughthe wire 38. A wire 39 connects one terminal of the solenoid to one sideof the motor 34:. C011- nected to the other side of the motor is a wire40 which at itsouter end is connected to a stationary insulated contactscrew 4-1. The numeral 4:2 indicates a Bourdon tube which is incommunication with the steam pressure in-the generator coil 1 throughthe medium of a pipe 43. When a predetermined pressure is created insaid Bourdon tube it will move a spring-held lever 44L out of con-' tactwith the screw 41. A wire connects the positive side of the battery 31to the lever 44, and when this lever is moved by the BOUI'ClOII tube outof contact with the screw 41, the electric circuit will be broken. Whenthis occurs, the motor 34 will not operate and the solenoid operatedvalve 19 will re-- main closed so that no air can flow to the nozzles16, 1.7 and 18, and, therefore, no fuel will be atomized and forced intothe cornbustion chamber. It will also be noted that the primary Winding32 of the spark coil is connected in parallel with the wire 4L5 whichleads to the lever a l, so that when the electric circuit is opened bythe action of the 'Bourdon tube 42, the current to the spark coil is cutoil in unison with the current to the motor 24 and solenoid 20,

In Fi n 3 l have shown 'an air nozzle 46 and c v L a Iuel nozzle 4'4entering a relatively fiat uninture nozzle 48 which istriangular inshape, the air; and fuel nozzles entering near the pointed end of themixture nozzle. The latter provides an outwardly flaring mixture chamberterminating in a narrow elongated outlet 50. This form of mixture nozzleis intended to provide an intimate mixture of the air and fuel and awide dis-- tribution in athin sheet of the ignited fuel through theoutlet 50. 4 l

I claim v 1. A hydrocarbon burner comprising a plurality of liquid fuelspraying and mix ture forming atcmizers, an ignition device cooperatingdirectly with one of said omizers, and means for forcing additionalatmospheric air into the mixtures from all.

of said after the ignition of the mixture in one of said atomizers bysaid ignition device.

2; A hydrocarbon burner comprising a plurality of liquid fuel sprayingand mixture forming atomizer-s, an ignition device for igniting themixture from one of said atomizers, an air duct surrounding all of saidatomizer-s, and means for forcing; atmospheric air into said duct tocombine with the mixtures from all of said atomizers.

3. In a combustion system, the combina tion with a heat absorbing mediumof a liquid fuel spraying and. mixture iorming atomizer, means forforcing additional atmosphere air into the mixture from said atomizer,and means responsive to changes in conditions in. the heat absorbingmedium for automatically controlling the fuel mixture from said atomizerand said additional air suppl I i, a combustion system, the combina tionwith a heat absorbing medium of a liquid fuel spraying and mixtureforming atomizer, an ignition device for igniting the mixture from saidatomizer, means for torcing additional atmosphenic air to the mixturefrom said atomizer, and means responsive to changes inCOIlClllZiOllS'lll' the heat absorbing medium for automaticallycontrolling the fuel mixture from said atomizer, the additional airsupply and the ignition device in substantial unison- I 5. In acombustion system, the combina tion with a heat absorbing medium ofliquid fuel spraying and mixture forming atomizer, an ignition devicefor igniting the mixture from said atomizer, means for fore-- ingadditional atmospheric to ignited mixture from-the atomizer, an electricdevice for controlling the atomizer, an electric device for controllingthe additional air supply, a source of electricity for furnish i-ngelectric current to said electric devices, and means responsive tochanges in conditions in'the heat absorbing medium for automaticallymaking and brealting the electric circuit, 7

6; in a combustion system, cornbinw tion with a heat absorbing medium ofa liquid fuel spraying and'niirrture forming atomizer, ignition devicefor igniting mixture from said atomizer, means for fur nishingadditional air to the ignited mixture from the atomizer which comprisesan air blower an electric motor f9X'.(l1l same,-a solenoid valvefercontij'clling the operation or the atomizer, source 0? nice trinityfor furnishing electric current tc said motor and said solenoid "valve,and

in. conditions means respoiisive changes in the heat absorbing mediumfor automati- V cally making" and breaking the electric c1rcuit.

ing the 7. in a combustion system, the combination With a heat absorbingmedium of a liquid fuel spraying and mixture forming atomizer, anelectric ignition device for igniting said mixture in the atomizer,means for forcing additional atmospheric air to the ignited mixture fromthe atomizer, an electric device for controlling the atomizer, an

electric device for controlling the additional air supply, a source ofelectricity for furnishing electric current to said'electric devices,and means responsive to changes in conditions in the heat absorbingmedium for automatically making and breaking the electric circuit.

8. Ina combustion system, the combination with a heat absorbing medium,01 a liquid fuel spraying and mixture forming atomizer, an ignitiondevice for igniting -said mixture from said atomizer, means forfurnishing additional air to theignited mixture, a storage tank, an aircompressor for'furnishing high pressure air thereto, a

connection from said air storage tank .to the 1 atomizer, a pressurereducing valve located in connection, an electric device controlling theoperation of the atomizer, an electric device for controlling theoperation of the additional air supply, a source of electricity forfurnishing electric current to said elec tric devices, and meansresponsive to changes in conditions in the heat absorbing medium forautomatically making and breaking the electric circuit.

9. In a combustion system, the combination with a heat absorbing medium,of a plurality of liquid fuel spraying and. mixture forming atomizers,an ignition device for igniting the mixture from one of said atomizcrs,an air duct common to all of said atomizers, and means for forcing additional atmospheric air through said duct the mixture from saidatomizers, and means responsive to changes in conditions in the heatabsorbing medium for automatically controlling the fuel mixture fromsaid atomizers, the additional atmospheric air and the ignition devicein substantial unison.

in Witness whereof I have hereunto set my hand this 3rd day of March1918.

LEWiS L. SCOTT,

lVitnesses DORIS MoKAY Soo'rr, Louis E. Sauna.

